Paul married Mary Huddlestone, of Dartmouth, on May 22, 1772 Solely from this, we guess a birth year of 1750. Paul and Mary married in Tiverton, where apparently they settled because Paul appears as a head of household in the 1774 Census of Rhode Island
Paul appears as head of household in the 1774 Census of Rhode Island. His household distribution and inferred attributions are
one man over 16: Paul
one boy under 16: unknown
one woman over 16: Mary
one girl under 16: unknown
It appears that Paul and Mary had a son and a daughter by the time of the census.
↑ "Rhode Island Town Marriages Index, 1639-1916," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F8KD-KTG : accessed 26 December 2017), Paul Crossman and Mary Huddlestone, 22 May 1772; citing Tiverton, Newport, Rhode Island, United States, town halls, Rhode Island, and Rhode Island Historical Society, Providence; FHL microfilm 44.