Hi Barbara
Sorry it's been ages.
Stephen Sanderson was one of 6 children bapt.26 Dec 1621 Cottenham. Other siblings:
Margaret 30 Jul 1620, George 9 Nov 1623, Francis 22 Jan 1625, Elizabeth 14 Dec 1628, William 1629 all at Cottenham. Children of George Sanderson & Alice Gotbed.
George Sanderson married Alice Gotbed 10 Oct 1619 Cottenham
George Sanderson bapt.21 Jun 1590 Cottenham son of William Sanderson & Susan Harding.
Amy Sanderson Born 1578, Thomas 1580, Edith 1582, William 1584, Francis 1588, Anne 1588, GEORGE 1590, Mary 1591, Francis 1593, Susan 1594, Catherine 1597.
William Sanderson marriage(1) Susan Harding 3 Dec 1585
William Sanderson marriage(2) Elizabeth Pittarson 16 Jan 1599 Cottenham
William/Eliz kids: Thomas 1599, William 1601 (all at Cottenham)
Susan Sanderson nee Harding bur. 1598 Cottenham
Alice Ivatt bapt. 4 Jan 1634 dau. of William Ivatt at Cottenham
Married Stephen Sanderson 27 Jul 1652 St Marys, Cambridge
Alice Sanderson nee Ivatt Bur. Aug 1709 Cottenham
Alice Ivatt siblings: William Ivatt 20 Sep 1629, Elisabeth 22 Jan 1636, Margaret 3 Feb 1638 all Cottenham.
Alice Gotbed bapt. 2 Mar 1599 Cottenham dau of William Gotobed/Margaret Ribshed.
Alice siblings: William Gotobed 17 Oct 1602, Ellenor 9 Jan 1606.
William Gotobed married Margaret Ribshed 17 Oct 1602 Oakington.
Hope this is of help. Perhaps you already have this.
Gary