Research needed: Conflicting birth and origin information.
Some researchers believe this English birth record refers to the Richard Talbott who emigrated to Maryland:
October 18, 1629 -- Richard Talbott was baptized at Gnosall, Staffordshire, England. No source has been found in Maryland directly linking him to a birthplace in England.
According to a patent record in the collection of the Maryland Archives, Richard Talbott was in Maryland by 1659, when he was granted 260 acres; He died by 1663 leaving orphans Edward & John & relict & executrix Elizabeth, who, by 1677, married William Richardson. Another patent record mentions land he was given by assignment from his father-in-law, Major Richard Ewen and that Talbott was deceased by 1674 In this time period, the term father-in-law could mean step-father or our modern usage of the term.
1649 -- Richard Talbott came to Maryland at the invitation of Governor Stone, settling there in the same period as Sir William Talbot and Col. George Talbot. They were all relatives of Lord Baltimore.
Richard Talbott acquired large bodies of land and eventually made his home at "Poplar Knoll," which remained in his family's possession until 1755:
1659 - Richard Talbott patents tract called Poplar Knowle in Anne Arundel County for 260 acres
Richard likely began the patents process on these tracts & his son completed it:
1664 - patents tract called Talbotts Ridge in Anne Arundel County for 300 acres
1664 - patents tract called Talbotts Timber Neck for 82 acres 
1662 -- Richard Talbott received a land grant on West River Hundred. 
Anne Arundel County Maryland: The First Settlers from Lord Baltimore's Rent Rolls. Genealogy Trails History Group. 2016. Accessed by Michael Boynton on December 27, 2016 at 6:30PM. Available at 
S-1409722112. U.S. and International Marriage Records, 1560-1900 Author: Yates Publishing Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2004. Original data - This unique collection of records was extracted from a variety of sources including family group sheets and electronic databases. Originally, the information was derived Repository: #R-1575024304 Note: #N3302 Data Changed: November 25, 2013 at 12:20:23
S107. Heritage Consulting. Millennium File Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2003. Original data - Heritage Consulting. The Millennium File. Salt Lake City, UT, USA. Repository: #R1 Record ID Number: MH:S107 User ID: B4383428-913F-45FC-9F7D-F1BCFBD9C937
S188. Alice Norris Parran. Register of Maryland's heraldic families: period from 1634, March 25th to March 25th, l935, tercentenary of the founding of Maryland. Baltimore, Maryland. Ancestry.com Online publication - Provo, UT: The Generations Network, Inc. 2005.
S34. Ancestry.com. England & Wales Christening Records, 1530-1906. Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2008. Original data - Genealogical Society of Utah. British Isles Vital Records Index, 2nd Edition. Salt Lake City, Utah: Intellectual Reserve, copyright 2002. Used by permission. Repository: #R1 Record ID Number: MH:S34 User ID: 928249C4-0CCA-42F2-A75A-E3F185AABEEE. http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=23363295&pid=14410961754
S42. P. William Filby, editor. Passenger and Immigration Lists Index, 1500s - 1900s. Farmington Hills, MI, USA: Gale Research, 2010. Online publication - Provo, UT, USA: Ancestry.com Operations. Repository: #R1 Record ID Number: MH:S42 User ID: 0BC294B4-E216-4B2B-8E53-D4E31910CFAA
This person was created through the import of HOWE(1).ged on 08 April 2011. The following data was included in the gedcom.
Thank you to Isaac Brown for creating WikiTree profile Talbott-516 through the import of IsaacBrown_Extended.ged on Nov 25, 2013.
Sir William Talbot became secretary of the Prerogative Court in 1670. If he was a friend of the Calvert family, he was likely a Catholic. The men who settled in Anne Arundel in 1650s were Puritans and very much against the Catholic government of the colony. I doubt this relationship and a primary source should be included.