Relationship Details
Celebrity Biographies
Dan Macmillan dated Sienna Miller in the past, but they broke up in June, 2011. Dan Macmillan dated Sienna Miller for 4 months. Dan Macmillan is currently available.
Fashion - Designer
Why Famous: great-granson of former Prime Minister Harold Macmillan
Age: 50 (b. 10/9/1974)
Entertainment - Actress
Why Famous: Tammy in Layer Cake, film
Age: 42 (b. 12/28/1981)
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Relationship Timeline
| Event | Start Date | Length |
|---|---|---|
| Dating | 2/2011 | 4 months |
| Broke Up | 6/2011 | -- |
| Total | 4 months |
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