this may be another line for you to follow...if his last name is watts then there were 2 watts boys on the 1871 census in Patrick. Also could Daniel and Ann's son thomas have had a child out of wed lock with daughter Elizabeth Watts

1871 Isle of Man Census
Civil Parish: Patrick
County/Island: Isle of Man
Country: Isle of Man
Street address: 51 Ballamoore
Occupation: Registration district: Isle Of Man
Sub registration district: A
Household Members: Name Age
James Watts 55 father born: Rushen occ; lead miner
Elizabeth Watts 26 daughter born: Patrick, Isle of Man occ; housekeeper
Robert Watts 20 son born: Patrick, Isle of Man occ; miner
Thomas Watts 18 son born: Patrick, Isle of Man occ;labourer at lead mine
Source Citation: Class: RG10; Piece: 5771; Folio: 53; Page: 12; GSU roll: 895840.