Sean:
There is a Boleymore townland in Grange parish.
I looked at the 1856 Griffiths Valuation and the 1901 census and no Ludlows in Grange. The only Ludlow household in Co. Galway in 1901 was a John who was a grocer in Loughrea.
I also checked the civil birth index records and no Margaret Ludlow in Co. Galway around 1880 closest was an 1879 birth in co. Longford.
Roger McDonnell