Stoen family

Hi, We are in the process of tracing our families. Our ancestors came to the USA in 1850 aboard the Drafna, so far we have been able to find good infromation except for two descendants. 1) Randi Halstensdatter STOEN (b) sept 14 1826 Nor (d) sept 7 1862 USA we thought that the datter part of the name means female as listed on the ships passenger list yet his gravestone lists him as the SON of Halsten Olsen Stoen. Is Randi a male or a female name ? 2) We have information on Tosten H Stoen (b) sept 1 1859 (d) oct 25 1910 other than that we know nothing of him. Any information that we could get in regards to these people would be greatly appreciated. Thx Steve