John (on the left in this photo) was born in 1881. William (“Willie”) (on the right) was born two years later in 1883. The date on the back of this photo is stated to be 1898 so John would be about 17 and Willie is about 15.
Mary’s younger sister, Maud, was born in 1884. She is on the left in this photo and Mary is on the right. The date of this photo is unknown but Mary does refer to herself on the back as “Miss Mary Rumping” – so the date must be prior to her marriage to George, which was in 1899.