He has two sets of parents on family search and over 100 sources. The find a grave also shows a short bio of parental Lineage as John Richardson and Elizabeth Wilmarth. We believe his parents should be changed and need some more advice as source being cited confirming parents see posts on profile
Current parents attached are Timothy Richardson (1715 - 1801) and Alice Wyman (1717 - 1777)
See FindAGrave Link
Looking through the records on famysearch, his birth record states
Name: Wyman Richardson Event Type: Birth Birth Date: 13 May 1746 Birth Place: Attleboro, Massachusetts Father Name: John Richardson Mother Name: Elizabeth Willmarth