This might be husband Thomas in his first marriage in 1891 (I wonder if the 1901 census transcript is mis transcribed and has Thomas Snr. down as James

specially given son John's birth entry in 1898):
Thomas Dougal 36, coal miner b. Wishaw
Ann J Dougal 36 b. Airdrie, Lanark
Thomas Dougal 5 b. Wishaw
Mary A Dougal 3 b. Wishaw
John Dougal 2 Wks b. Overtown, Lanark
Address: Wemysshill Row, Cambusnethan
Monica
Added: I keep on going on about birth of a John Hendry Dougal

- it's James Hendry Dougal as showing on the 1901 census.