Hi Gill,
Is this your Peter.
Peter Lawrence McLaren 25 married Isabella Millar Cairns in Kirkcaldy in 1910. Peter gave ur a 43 Union St., Dundee.
The 1911 census has a Peter McLaren aged 25 wife Isabella 25 and duaghter Jessie 5 months living at 2 Graham St., Dundee. He is a commercial Traveller (Confectionary) and was born in Coupar Angus, Perthshire and Isabella was born in Kirkcaldy. Jessie the daughter was born in Dundee. There was also a Boarder living with them.
Regards,
Weemanswife