Family tree brick wall

I am researching the Smith Family and would greatly appreciate any help finding out if Grace Smith had any children (I have looked myself and can't find anything so far) The information I have is as follows : Grace Smith was born in Belfast, Belfast No6, County Antrim on the 3rd of April 1880, residence at time was 37 East St. Her father was Robert Smith a Sailor/Seaman and her Mother was Ellen Hattrick (Sometimes wrongly transcribed as Helen) (Surname variations Harttrik, Hartrick, Hatrick). Grace Smith has several siblings Catherine Smith married James C Wilson. Ellen Smith married Allan Laing. Mary Ann Smith, William Smith, Robert Smith and John Smith. All born between 1866-1885 Belfast, Antrim, Co. Down. Grace Smith appears in the 1901 Census in Antrim, Duncairn Ward, 56 Hogarth Street as Grace Smith, Age 20, Daughter, Church of Ireland, Birth place Co.Antrim, Occupation Box maker, Read & write and not married. Her parents listed as Ellen Smith, Age 60, a housekeeper, Father Robert Smith, 61, Sailor, Grace's Brother William Smith, age 35, Rivetter, Grace's sister Mary Smith, age 17, occupation box maker and her niece Ellen Laing age 18.
Grace Smith married Samuel William TownsendI am researching the Smith Family and would love to find out if Grace Smith has any children (I have looked myself and can't find anything) The information I have is as follows, Grace Smith was born in Belfast, Belfast No6, County Antrim on the 3rd of April 1880, residence at time was 37 East St. Her father was Robert Smith a Sailor/Seaman and her Mother was Ellen Hattrick (Sometimes wrongly transcribed as Helen) (Surname variations Harttrik, Hartrick, Hatrick). Grace Smith has several siblings Catherine Smith married James C Wilson. Ellen Smith married Allan Laing. Mary Ann Smith, William Smith, Robert Smith and John Smith. All born between 1866-1885 Belfast, Antrim, Co. Down. Grace Smith appears in the 1901 Census in Antrim, Duncairn Ward, 56 Hogarth Street as Grace Smith age 20 daughter church of Ireland birth place co.Antrim Occupation Box maker Read & write and not married. Her parents Ellen Smith age 60 housekeeper, father Robert Smith 61 Sailor, Brother William Smith age 35 Rivetter, sister Mary Smith age 17 occupation box maker and her niece Ellen Laing age 18.
Grace Smith married Samuel William Townsend on the 7th October 1904 in Belfast, Co. Antrim, Methodist church. Samuel William Townsend was of Full age and a Bachelor
His occupation was Labourerr and his place of residence at the time was 21 Duncan St H_ll, His father was Edward Townsend, Occupation Iron Ore Dresser . Grace Smith, Age "Full", Spinster, 39 Mount Collyer Road, Belfast, Father Robert Smith a Sailor.
Thanks so much in advance, really do appreciate any help!