In the Dorset On line Parish Clerks Mosterton Baptisms "11-Mar-1792 Mary daughter of Samuel LARCUMB" http://www.opcdorset.org/MostertonFiles/MostertonBaps.htm
There are a number of examples where the same parents are spelled sometimes as Larcombe and sometimes as Larcumb
"England, Dorset, Parish Registers, 1538-2001", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QJDH-KSBM : 2 June 2020), Samuel Larcombe and Jane Larcombe, 1788.
21-Dec-1788 Robert son of Samuel LARCOMBE Transcript of the Register prepared by Reverend Herbert William Allen in 1905, Rector of the parishes of South Perrott and Mosterton from 1904-1917.
"England Births and Christenings, 1538-1975", database, FamilySearch (https://familysearch.org/ark:/61903/1:1:ND2W-S46 : 21 March 2020), Samuel Larcombe in entry for Mary Larcombe, 1792.
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